The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 05, 1983
Filed:
Sep. 10, 1980
Applicant:
Inventor:
Karl-Heinz Walter, Grafing, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
340803 ; 340719 ; 340789 ; 340811 ;
Abstract
An activation module for multiplex passive displays integrates the output drivers of the module into two groups which, independently of one another, can be connected either to the columns or to the rows of an electrode matrix. The four pulse voltages necessary for this purpose are internally formed. Preferably, the switching unit has driver groups with 10 or 35, respectively, output drivers and can thus activate a 10-position data row with 5.times.7 matrices. The component can be constructed with known elements of CMOS technology. The proposed multiplex driver finds use, above all, in medium-to-high information liquid crystal displays.